Cheap Flights from London to Bangkok: Fares from £370 (2026)
Disclosure: This article contains affiliate links. If you make a booking through these links, we may earn a commission at no extra cost to you. Cheap Flights from London to Bangkok, Starting at £370 Return I almost booked the wrong ticket. There it was, glowing on my screen one drizzly September afternoon: a Xiamen Air return for £370, the cheapest London to Bangkok fare I’d ever seen. My thumb was over the button. Then I noticed the bag allowance and the layover, did the maths, and quietly closed the tab. I’ll tell you what I booked instead in a minute, because it taught me everything about this route. ...